Multiple drill.



PATENTED OCT. 9, 1906.

C. H; OSLUND.

MULTIPLE DRILL.

APPLICATION TILED FEB.1, 1906.

- 3 SHEETS-SHEET 1 QZWQ 422% WITNESSES I/ f": norms PETERS C0,,vusmua'rou, o. c.

PATENTED OCT. 9, 1906.

C. H. OSLUND. MULTIPLE DRILL. APPLIOATION FILED FEB.1,1906.

3 SHEETS-SHEET 2.

INVENTOR WITNESSES m: NURRIS PETERS 0a., wn'rimamfi, o. c.

No. 832,696. I PATBNTED ocT. 9, 1906.1

0. H. OSLUND. MULTIPLE DRILL.

' APPLICATION FILED FEB. I 1906.

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I WITNESSES Maw UNITED STATES PATENT OFFICE.

CHARLES H. OSLUND, OF WORCESTER, MASSACHUSETTS, ASSICrNOR TO AMERICANSTEEL 8: WIRE COMPANY, OF WORCESTER, MASSACHU- SETTS, A CORPORATION OFNEW JERSEY.

MULTIPLE DRILL.

Patented Oct. 9, 1906.

Application filed February 1, 1906. Serial No. 298,895.

To all whom it may concern:

Be it known that LCHARLES H. OSLUND, of Worcester, in the county ofWorcester and State of Massachusetts, have invented a new and usefulMultiple Drill, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification,

in which -with the track-rail in section.

Figure 1 is a plan view, partly broken away, showing a drill-machineembodying my invention in use. Fig. 2 is a front elevation of the same.Fig. 3 is an end elevation Fig. 4 is an enlarged plan view, partlybroken away, showing the drill-ratchets. Fig. 5 is a'section on the lineV V of Fig. 4. Fig. 6 is a detail view showing the drill adjustment, andFig. 7 is a detail view of a portion of one of the drill-spindles withits ratchet.

My-invention relates to multiple or gang drills, and while it is usefulfor a variety of purposes it has been more particularly designed forusing in drilling rails for rail-bonds, the object being moreparticularly to provide a simple and efficient machine which may bereadily applied to track-rails for the purpose of drilling thereinsimultaneously a plurality of adjacent holes and which is so constructedthat trains may be allowed to pass over the rails being drilled withoutremoving the machine.

Other objects and advantages of the invention will hereinafter appear.

With these objects in view the invention consists in the novelconstruction, arrangement, and combination of parts, all substantiallyas hereinafter described, and pointed out in the appended claims.

In the accompanying drawings, the numeral 3 designates a supportingplate or bar which is provided at its end portions with the dogs 4 and5, by means of which it may be attached, as shown, to the fish-plate 2of a rail-joint. The dog 4 has a sleeve portion 4, which is swiveled onthe pro'ecting stud 3 of the support 3 and is forme with a jaw 4 whichengages the ends of the fish-plate 2 in the manner shown in Fig. 1. hasa threaded engagement with the end por tion of the support 3 for thepurpose of providing an adjustment so that the drills may The dog 5'properly fit any curvature or unevenness in the rail, the adjustmentbeing secured by means of the nuts 6.

5 designates the jaw portion of the dog 5, which engages the oppositeend of the fishplate 2.

. 7 is the base portion of the drillfran1e, which is mounted upon thesupporting-bar 3, being secured thereto by the clampingbolts 8, whichpass through an elongated slot 9 in the said bar, whereby the frame,together with the drill carrying and operating devices hereinafterdescribed, may be moved longitudinally on the supporting-bar and securedin the desired position.

'10 is the drill-carriage, which is mounted on the frame 7 between theguides 11, being movable on said guides toward and away from the rail tobe drilled by means of the feed-screw 12, having a hand-wheel 13. Theshaft of the feed-screw 12 has fixed thereto aratchet-wheel 14. Adjacentto this ratchetwheel is a cam-plate 15, rotatably mounted on said shaftand by means of which the number of teeth exposed to the action of apawl 16, hereinafter more fully described, may be varied. This cam-plate15 is secured in desired adjustment by means of a lockingtooth 17 Thepurpose of this plate is to hold the pawl out of engagement with theteeth of the ratchet-wheel 14 during a certain portion of its stroke,during which the pawl is held from dropping into engagement with theteeth by the fact that it is riding on the edge of the plate. Byadjusting the position of the plate relatively to the stroke of the pawlthe effective stroke of the latter is varied.

18 designates the drills, whose shanks are secured in the rotary holders19, which are provided With bearings 20 on the drill-carriage 10. Theouter 'end of each'holder carries a ratchet-wheel 21, and between thesewheels and the outer bearings 20 each holder is provided with aset-collar 22,

23 is a drill-operating slide which is arranged to reciprocatetransversely in guides 24 on a forward extension of the drill-carriageframe 10 and which carries two series of pawls 25 and 26, the pawls 25being hinged or pivoted thereto above the ratchet-wheels 21 and thepawls 26 being arranged below such 3O formed with slots 19 through whichare incauses the wheels, as clearly shown in Fig. 5. This slide is 0erated by means of a lever 27, having a socl et for a removablehandle-bar 28. This lever is connected to a projecting lug 30 on thecarriage frame by a short link 31 and is pivoted at 29 to a projectionon the slide. 32 is a stop-arm for the lever carrying a hinged stop 33.

34 represents thrust-screws which are seated in a thrust-plate 35 andbear at their inner ends against the outer faces of the ratchetwheels21, the latter having concave central bearing-surfaces 21 for thesescrews.

a; 36 designates two slotted arms which are pivoted to thedrill-carriage at 37, the pivots passing through the slots in said arms,as best shown in Fig. 3. Adjustably secured to each of the arms 36 bymeans of bolts 38, passing through the slots 39, is a dog 40, whichengages over the head of the track-rail A and is held in engagementtherewith by a set-screw 41. Pivoted to a lug 42 on each arm 36 is alock or finger 43, having a tooth 44, which engages a notch ordepression 45 in the dog 40.

46 designates a graduated scale on one of the guides 11, and 47 is anindicator on the drill-carriage 10, arranged to traverse the scale andindicate the depth of drill.

In order to secure an individual adjustment of each drill 18, thedrill-holders 19 are serted keys 19, which bear against the inner end ofthe drill-shanks and also against the faces of knurled nuts or collars47, which are threaded on the drill-holder, as shown in Fig. 6. By theadjustment of these collars the drills may be moved in the holders togive them proper adjustment.

The operation is as follows: The drill is applied to the rail-joint tobe drilled in the manner shown in the drawings by engaging the dogs 4and 5 with the ends of the fish-plate 2, and the dogs 40 are properlyadjusted and are engaged with the head of the rail by means of theset-screws 41, being locked by means of the fingers 43. Thedrill-carriage is then properly adjusted, and the lever-handle 28 isoscillated in a plane parallel with the longitudinal plane of the rails.This causes a reciprocation of the drill-operating slide, the pawls 25operating the ratchet-wheels 21 in one direction of movement of theslide, while the pawls 26 operate said wheels during the reversemovement. As the slide is reci rocated the pawl 16, which is carried bytl ie slide, engages the teeth of the ratchet 14 and roper feed motionof the drillcarriage. 11 case it is necessary to permit a train to passthis can be readily done by loosening the screws 41 and disengaging thedogs 40 and moving them back to clear the rail. This can be done withoutdisengaging the dogs 4 and 5.

By the arrangement above shown and described it is possible to quicklyand accurately drill the bond-holes in the rails without disturbing themand without interfering with the passage of trains.

The construction provides for the use of a number of drills whosecenters are but a short distance apart, so that close drilling of anumber of holes is possible.

In place of the dogs 40 it is obvious that any form of dog which can beengaged with the heads of the rails may be employed, also that variousother changes may be made in the details of construction and arrangementWithout departing from the invention, since What I claim is 1. Amultiple drill for drilling railwaytrack rails adjacent to the jointsthereof, said drill having a supporting-frame, a drill-carriage mountedthereon, a plurality of drills, means for actuating the drills, and dogsmovably connected to the frame and arranged to engage the end portionsof the joint-plates; substantially as described.

2. A multiple drill having arms pivoted thereto, dogs adjustably securedto said arms and arranged to engage over the head of the rail to bedrilled, and other dogs connected to the drill-frame and arranged toengage the fish-plate of the rail-joint; substantially as described.

3. A multiple drill of the character described having" a multiple-drillcarriage, a frame upon which said carriage is movably mounted, armsloosely connected to said carriage, and pivoted dogs carried by the saidarms and arranged to engage the head of a track-rail to be drilled;substantially as described.

4. In a multiple drill, the combination with a plurality of rotarydrill-holders, a movable carriage in which said drill-holders aremounted, a transversely-reciprocating slide mounted on said carriage andhaving means for actuating said holders in both directions of itsmovement, and a lever for actuating .the slide; substantially asdescribed.

5. In a multiple drill, a plurality of rotary drill-holders, a singlemovable carriage in which all the holders are mounted, ratchetwheelssecured to the holders and a transversely-reciprocating slide mounted onsaid carriage having pawls arran ed to engage and actuate theratchet-whee s during both movements of the slide; substantially asdescribed.

6. In a multiple drill, the combination with a plurality of rotarydrill-holders, a carriage in which the holders are mounted, and areciprocating slide, means carried by the slide for actuating theholders, a feed-screw for the carriage, and means operated by the slidefor actuating the feed-screw substantially as described.

7. In a multiple drill, the combination with a plurality of rotarydrill-holders, a movable carriage in which the holders are mounted, afeed-screw for the carriage, a reciprocating slide, and pawl-and-ratchetmechanism operated by the slide to actuate the drillholders and thefeed-screw; substantially as described.

8. In a drill for drilling holes in traclcrails, the combination with asupporting-frame, and means for attaching the same to a rail 'jointplate, of hooks or dogs arranged to engage the rail-head and to bedisengaged therefrom and moved to clear the rail; substantially asdescribed.

9. In a drill-press for drilling track-rails, the combination with thedrill-carriage, and means for feeding the same, of slotted arms looselyconnected to the carriage, and dogs adjustably secured to said arms andarranged to engage the head of the rail being drilled; substantially asdescribed.

10. In a multiple drill for drillin jointed track-rails adjacent to thejoints t creof, a supporting-frame, a drill-carriage mounted thereon,and carrying a plurality of drills, and a dog connected to each endportion of the supporting-frame, and arranged to engage an endportion'of a joint-plate, one of said dogs being adjustable toward andaway from the rails; substantially as described.

In testimony whereof I have hereunto set my hand.

CHARLES H. OSLUND. Witnesses:

CHAs. R. STURDEVANT, WM. A. BACON.

